Automatic double lock.



M. C. SLODERBEUK.

AUTOMATIC DOUBLE LOCK.

APPLICATION FILED FEB. 1, 1913.

Patented Dec. 9, 1913.

COLUMBIA PLANpaRAPu C01. WASHINGTON. D c.

ilNiiiE TAETE EPATENT FEWQE,

IKARTIN C. SLODERBECK, OF MARION, INDIANA, ASSIGNOR OF ONE-THIRD TO EDWARD E. LEAPLEY AND ONE-THIRD TO VJILLIAM A. LEAPLEY, OF MARION, INDIANA.

AUTOMATIC DOUBLE LUCK.

To all whom it may concern:

Be it known that I, MARTIN C. SLODER- BECK, a citizen of the United States of America, residing at Marion, in the county of Grant and State of Indiana, have invented certain new and useful Improvements in Automatic Double Locks, of which the following is a specification.

This invention relates to certain new and useful improvements in automatic double switch locks and comprises a division of my application for automatic derailer, filed October 30, 1911, Serial Number 657,689; the object being to provide a double lock in which a pair of locking members are mounted, one of said members being especially adapted for locking the switch lever in locked position when trains are being switched in freight yards and the like, the other lock being key-controlled in order to prevent any one from tampering with the switch after it has been set.

Another and further object of the invention is to provide an automatic double lock which is exceedingly simple and cheap in construction and one in which the parts are so mounted and inclosed in a casing, that all danger of the same being affected by the weather, is prevented.

Another and further object of the inven tion is to provide novel means for actuating the sliding bolt by a treadle.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawingFigure 1, is a side elevation of my improved double lock, one side plate being removed in order to show the mechanism thereof; Fig. 2, is an end View of the lock; and Fig. 8, is a side elevation taken from the reverse side to that of Fig. 1; the side plate being removed to show the locking mechanism.

Like numerals of reference refer to like parts in the several figures of the drawings.

In carrying out my improved invention, I employ a casing 1 mounted upon a suit able base; said casing being provided with a pair of compartments to each side of the lever-receiving slot 3. Mounted in one of the compartments is a sliding bolt 4: which is provided with an oblique edge 5 mounted upon an inclined face 6 formed in the com- Specification of Letters Patent.

Patented Dec.9,1913.

Divided and this application filed February partment; said bolt having an oblique upper edge F adapted to be engaged by the switch lever 8 when forced into the slot so as to force the bolt out of its path which allows the lever to pass-into the lower portion of the slot. The belt 1 is provided with a notch 9 into which extends the rounded end 10 of a lever 11 pivotally mountec as shown at 12, and provided with a weighted end 13 which normally holds the bolt in an extended position into the slot so that after the lever has passed into the lower portion of the slot, the bolt is forced into the position shown in Fig. 1. When the bolt is engaged by the lever it is moved into the position shown in dotted lines in Fig. 1; and in Fig. 1, 1 have shown the side of the casing removed which comprises a plate 14 secured in position by bolts 15. Mounted in the other compartment of the casing 1 is a sliding bolt 16 normally held in an extended position across the slot 3 by a spring 1'? arranged between pins 18 and said bolt is provided with an oblique face 19 which is engaged by the lever 8 when forced into the slot so as to force the bolt out of its path and after the switch lever has passed the bolt, it is thrown back into position so as to hold the switch lever in locked position. The bolt is provided with a notch 20 adapted to receive the bit of a key 21 capable of being inserted through a keyhole formed in the side of the casing; said keyhole being normally inclosed by a swinging cover 22 in order to prevent snow and rain from entering the casing. It will be seen that when the key is inserted in the lock and turned, the bolt 16 will be moved or drawn out of the lever-receiving slot in order to allow the lever to be raised upwardly.

In order to provide means for locking the bolt 16 without the key, I provide the bolt with notches 2-3 into which is adapted to fit the lug 24 of a dog 25 carried by a treadle 26 pivotally mounted in a bracket 27. By raising the treadle, the dog will be forced into engagement with the locking bolt in order to force the lug 24 into the notch so as to lock the bolt 16 in extended position. lVhen the bolt 16 is locked by the dog 25 it is only necessary to press downwardly on the treadle 26 in order to release the dog so as to allow the bolt 16 to be moved out of the path of the switch lever as the same is forced into the slot, which is clearly shown in dotted lines in Fig. 3.

From the above description, it will be seen that I have provided an automatic double lock for switch levers in which means is provided for temporarily locking the switch lever by a sliding bolt controlled by a Weighted lever; positive means being provided for looking the switch lever by a sliding key-operated bolt.

I claim:

1. An automatic double lock for switch levers comprising a casing having a leverreceiving slot, a weight-actuated bolt mounted in said casing normally held in extended position over said slot, a spring-actuated bolt mounted in said casing held in extended position over said slot, and a key for actuating said spring-actuated bolt.

2. An automatic double lock or switch levers comprising a casing provided with a lever-receiving slot and a pair of compart ments, one compartment being provided with an inclined guide, a bolt slidably mounted upon said guide, and a weighted lever for actuating said bolt.

3. An automatic lock for switch levers comprising a casing provided with a lever receiving slot, a bolt slidably mounted in said casing extending across said slot, 2 spring for holding said bolt in extended position, said bolt being provided with a notch, and a key having a bit co-acting with said notch for locking said bolt in extended position.

4:. A look for switch levers comprising a casing provided with a lever-receiving slot, a bolt slidably mounted in said casing, a

spring for holding said bolt in extended position across said slot, a pivoted lever, and a dog carried by said lever co-acting with said bolt.

5. A look for switch levers comprising a casing provided with a lever-receiving slot, a springactuated bolt provided with notches, a pivoted treadle, and a dog pivotally carried by said treadle provided with a lug co-acting with said notches.

6. An automatic double lock for switch levers having a weight-actuated bolt and a spring-actuated bolt, said spring-actuated bolt being locked in extended position by a pivoted dog, and means for aotuatin said dog.

7. An automatic double lock comprising a casing provided with a lever-receiving slot, said casing being provided with compartments, a weight-actuated bolt slidably mounted in one o1 said compartments, a spring-actuated bolt mounted in the other compartment, and double means for locking aid spring-actuated bolt in extended position across said slot.

8. A switch lever lock comprising a casing provided with a lever-receiving slot, a spring-actuated bolt provided with a notch, a pivoted dog having a lug co-acting with said notch, and a treadle for actuating said dog.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN O. SLODERBEOK.

Witnesses W. E. WILLIAMS, N. H. CARROLL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

